<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>正方形</title>
		<style type="text/css">
			div{
				width:200px;
				height:200px;
				background-color:green;
				
			}
		</style>
	</head>
	<body>
		<img src="1.jpg"/>
		<div></div>
	</body>
</html>
